Simplify ctx update in decode_cabac_mb_dqp().

no speed change Originally committed as revision 16232 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago · 1aea5d35e5
parent 7cfca0dfd8
commit 1aea5d35e5
1 changed files with 1 additions and 4 deletions
--- a/libavcodec/h264.c
+++ b/libavcodec/h264.c
@ -4959,10 +4959,7 @@ static int decode_cabac_mb_dqp( H264Context *h) {
    int   val = 0;

    while( get_cabac_noinline( &h->cabac, &h->cabac_state[60 + ctx] ) ) {
-        if( ctx < 2 )
-            ctx = 2;
-        else
-            ctx = 3;
+        ctx= 2+(ctx>>1);
        val++;
        if(val > 102) //prevent infinite loop
            return INT_MIN;